Usage:
Anderson Phyllite (WY)
(†Anderson Phyllite not used by the USGS. Replaced with Nash Fork Formation. See Nash Fork.)
Geologic age:
Paleoproterozoic
Type section, locality, area and/or origin of name:
Named from old Anderson mining prospect on Libby Creek, Medicine Bow Mountains, southeastern WY (Blackwelder, 1926).
[Libby Creek in T. 16 N., R. 78 and 79 W., Centennial and Medicine Bow Peak 7.5-min quadrangles, Albany Co., southeastern WY.]
AAPG geologic province:
Northern Rocky Mountain region
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).